#define  _CRT_SECURE_NO_WARNINGS 1

#include <stdio.h>

int main()
{
	int a = 0;
	int b = 0;

	scanf("%d %d",&a,&b);

	a = a ^ b;
	b = a ^ b;
	a = a ^ b;

	printf("a=%d b=%d",a,b);

	return 0;
}